Ganymede is the largest moon in the solar system, but it is still much smaller than the Earth.

Ganymede is covered with light and dark markings. The light areas are made up of rows of mountains and the dark areas are very old, heavily cratered regions. There might be some ice on Ganymede, but it could be hard to find.

Big Problems:

Ganymede is inside Jupiter's radiation belts

Jupiter is far from the sun so sunlight is very dim

It is also cold out there - between 100 to 200 degrees below zero Centigrade

Gravity is only about 1/3rd as strong on Ganymede as it is on Earth - how will this affect you and your buildings?